Semi-quantum identification

Zhou, Nanrun; Zhu, Kongni; Bi, Wei; Gong, Li-Hua

doi:10.1007/s11128-019-2308-4

Cited by 36 publications

(22 citation statements)

References 37 publications

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“…|a, c, e a,b,c (16) where the |e a,b,c are arbitrary states in E's ancilla (again, we assume without loss of generality that E's ancilla is cleared to some initial pure state |χ E ). Note that we are not assuming a particular structure to this attack (e.g., we do not assume it consists of the Rw operator used in the proof of Theorem 1-instead, it may be arbitrary and if we prove security here, we will gain security of ent since it will cover any attack against that protocol).…”

Section: B Proof Of Security For Owmentioning

confidence: 99%

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High-Dimensional Semiquantum Cryptography

Iqbal

Krawec

2020

IEEE Trans. Quantum Eng.

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A semiquantum key distribution (SQKD) protocol allows two users, one of whom is restricted in their quantum capabilities to being nearly classical, to establish a shared secret key, secure against an all-powerful adversary. The study of such protocols helps to answer the fundamental question of "how quantum" must a protocol be to gain an advantage over classical communication. In this article, we design a new SQKD protocol using high-dimensional quantum states and conduct an information theoretic security analysis. We show that, similar to the fully quantum key distribution case, high-dimensional systems can increase the noise tolerance in the semiquantum case. Furthermore, we prove several general security results which are applicable to other (S)QKD protocols (both high-dimensional ones and standard qubit-based protocols) utilizing a two-way quantum channel.

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Section: B Proof Of Security For Owmentioning

confidence: 99%

“…Since its original introduction in 2007, there have been numerous new semiquantum key distribution (SQKD) protocols developed [6]- [12]. There have also been extensions to the model beyond basic key distribution including secret sharing [13]- [15], identification [16], and state comparison [17]- [19].…”

Section: Introductionmentioning

confidence: 99%

High-Dimensional Semiquantum Cryptography

Iqbal

Krawec

2020

IEEE Trans. Quantum Eng.

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“…To resist this kind of attacks, the photon number splitter device and the optical wavelength filter device could be equipped [43,44]. Besides, identification should be employed to resist man-in-the-middle attack [45][46][47].…”

Section: Security Analysismentioning

confidence: 99%

Semi-quantum key distribution with two classical users

Sun²

2022

Front. Phys.

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Semi-quantum key distribution (SQKD) is an important research issue which allows one quantum participant equipped with advanced quantum devices to distribute a shared secret key securely with one classical user who has restricted capabilities. In this paper, we propose a SQKD protocol which allows one quantum user to distribute two different private secret keys to two classical users respectively at the same time. Alice distributes two particle sequences from Bell states to Bob and Charlie respectively. Once the particles have been processed and returned, Alice can simultaneously detect reflected particles by Bob and Charlie based on Bell-state measurement and generate two different raw keys. To enable more participants in sharing keys, this protocol can be extended to the m + 1 party communication scheme by employing m-particle GHZ state. In large-scale communication networks, this extended model significantly reduces the complexity of communication compared to the traditional SQKD scheme. Security analyses show that the presented protocol is free from several general attacks, such as the entangle-measure attack, the modification attack, the double CNOT attack, and so on.

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“…CloQ protocols involve at least one classical party (or CloQ party) who is restricted to using the four classical operations 1-4 described below for interacting with a quantum channel. CloQ protocols have been shown to exhibit highly interesting theoretical properties; currently, their most well understood application is SQKD (see [18] for a recent review), but CloQ protocols have also been devised to solve other cryptographic problems, including secret sharing [19], [20], [21], secure direct communication [22], [23], [24], [25], identity verification [26], [27], and private state comparison [28]. CloQ protocols may even be devised in the future for quantum verification by defining a CloQ variant of QPIP (quantum prover interactive proofs) [29], which could allow a CloQ party to verify quantum computations performed by a fully quantum center (or prover).…”

Section: Introductionmentioning

confidence: 99%

Security Proof Against Collective Attacks for an Experimentally Feasible Semiquantum Key Distribution Protocol

Krawec

Liss

Mor

2023

IEEE Trans. Quantum Eng.

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Semiquantum key distribution (SQKD) allows two parties (Alice and Bob) to create a shared secret key, even if one of these parties (say, Alice) is classical. However, most SQKD protocols suffer from severe practical security problems when implemented using photons. The recently developed "Mirror protocol" [1] is an experimentally feasible SQKD protocol overcoming those drawbacks. The Mirror protocol was proven robust (namely, it was proven secure against a limited class of attacks including all noiseless attacks), but its security in case some noise is allowed (natural or due to eavesdropping) has not been proved yet. Here we prove security of the Mirror protocol against a wide class of quantum attacks (the "collective attacks"), and we evaluate the allowed noise threshold and the resulting key rate.

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Semi-quantum identification

Cited by 36 publications

References 37 publications

High-Dimensional Semiquantum Cryptography

High-Dimensional Semiquantum Cryptography

Semi-quantum key distribution with two classical users

Security Proof Against Collective Attacks for an Experimentally Feasible Semiquantum Key Distribution Protocol

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